@article{ref1,
title="The role of play for self development of the child",
journal="Kinderkrankenschwester",
year="2003",
author="Papousek, Mechthild",
volume="22",
number="2",
pages="72-76",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0723-2276",
doi="",
url="http://dx.doi.org/"
}